CVE-2016-20024
Deferred Deferred - Pending Action
Insecure File Permissions in ZKTeco ZKTime.Net Enable Privilege Escalation

Publication date: 2026-03-16

Last updated on: 2026-06-08

Assigner: VulnCheck

Description
ZKTeco ZKTime.Net 3.0.1.6 contains an insecure file permissions vulnerability that allows unprivileged users to escalate privileges by modifying executable files. Attackers can exploit world-writable permissions on the ZKTimeNet3.0 directory and its contents to replace executable files with malicious binaries for privilege escalation.
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Meta Information
Published
2026-03-16
Last Modified
2026-06-08
Generated
2026-06-16
AI Q&A
2026-03-16
EPSS Evaluated
2026-06-14
NVD
CVE-2016-20024
EUVD
EUVD-2016-10803
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
zkteco zktime.net From 3.0.1.1 (inc) to 3.0.1.6 (inc)
zkteco zktime.net 3.0.1.6
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-538 The product places sensitive information into files or directories that are accessible to actors who are allowed to have access to the files, but not to the sensitive information.
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Executive Summary

This vulnerability exists in ZKTeco ZKTime.Net version 3.0.1.6 and involves insecure file permissions. Specifically, the ZKTimeNet3.0 directory and its contents have world-writable permissions, which means any user can modify the files there. An attacker who is an unprivileged user can exploit this by replacing executable files with malicious binaries, allowing them to escalate their privileges on the system.

Impact Analysis

The impact of this vulnerability is significant because it allows an attacker without privileges to gain elevated privileges by modifying executable files. This can lead to unauthorized control over the affected system, potentially allowing the attacker to execute arbitrary code, access sensitive data, or disrupt system operations.

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